Home / 3,455.64-5,180.58-1,605.78

Finding the Fourth Proportional to 3,455.64, 5,180.58 and 1,605.78

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Solution

The fourth proportional to 3,455.64, 5,180.58 and 1,605.78 is: 2,407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.64 : 5,180.58 = 1,605.78 : x
  2. Step 2: Convert to fraction form
    3,455.64/5,180.58 = 1,605.78/x
  3. Step 3: Cross multiply
    3,455.64x = 5,180.58 × 1,605.78
  4. Step 4: Simplify right side
    3,455.64x = 8,318,871.75
  5. Step 5: Solve for x
    x = 8,318,871.75/3,455.64
  6. Step 6: Final answer
    x = 2,407.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.